Question about Sony KP-57HW40 57" Rear Projection Television
Blinking 5 times means White Balance failure
Possible causes can be :
• Video out (IC7101, 7201, 7301) is faulty. (CR, CG, CB board)
•CRT drive (IC309) is faulty. (A board)
•G2 is improperly adjusted. (See Note 2)
Looking at the back of the TV
the A board :
On the G BOARD ( Power Supply )
a ) .Confirm the voltage of TP +B 135V is less than 137.0Vdc.
it can also be checked here:
and don't forget to check Q8038 for short if there is no B+,
it is connected on pin one ( 1 ) of the flyback
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Posted on Jan 30, 2010
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Posted on Jan 02, 2017
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